Convert B1/B2 to US work visa: Apply via sponsorship.

To convert your US B1/B2 visa (tourist/business visa) to a work visa, follow these steps:

1. Job Offer: Obtain a job offer from a US employer willing to sponsor you for a work visa.

2. Employer Petition: Your employer must file Form I-129 (Petition for a Nonimmigrant Worker) with US Citizenship and Immigration Services (USCIS).

3. Visa Approval: Wait for USCIS to approve the petition.

4. Change of Status: Apply for a change of status from B1/B2 to the appropriate work visa category (e.g., H-1B, L-1).

It's important to note that you cannot start working until your change of status is approved. Consulting an immigration attorney can help you navigate the process and ensure compliance with all legal requirements.